Illearth has 0 defence? Why?

[Agrajag]

1) When your defence decreases due to being hit multiple times in one round, and you check the properties of the hit unit, how is the loss of defense displayed? Could that have caused it?
2) Thejeff, what Ylvali is saying that in spite of this unit being a prophet (prophet icon + blessed status), it does not have any level in Holy magic, which a prophet should have at least 3.
This is an interesting point that Ylvali raises.